knowverb(BE FAMILIAR WITH)
 Thesaurus: synonyms, antonyms, and examples to be able to do something
able toI wasn't able to work out what she was trying to say.
canCan you make out what she is trying to say?
be capable of (doing)You are capable of a lot more than you think you are.
know how to"Do you know how to swim?" "Of course I know how to swim."